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Nuemericon
Asked: 2025-04-16 06:46:39 +0800 CST

无法解决语法错误并且无法解析输入树

  • 772

我正在尝试为我的 Nvidia Jetson Nano 开发板创建新的 dtb 文件。核心问题是 SD 卡无法识别，但我确信这是 Nvidia 直接导致的。我在网上查找，找到了包含关键 dts 文件的仓库：“https://github.com/forecr/forecr_nano_kernel/tree/Jetpack-4.6.6”。我根据自己的需求修改了 forecr_nano_kernel-Jetpack-4.6.6/hardware/nvidia/platform/t210/porg/kernel-dts/tegra210-p3448-0002-p3449-0000-b00.dts 文件，因此在第一行添加了 /dts-v1/; ，并更改了

sdhci@700b0000 { /* SDMMC1 for SD card */
status = "disabled";
};

到

sdhci@700b0000 { /* SDMMC1 for SD card */
status = "okay";
};

在这里，我尝试了很多方法，甚至借助了 Gemini Deep Research、ChatGPT、deepseek、Stackoverflow 和 nvidia 论坛的帮助，但由于我对 dtc 编码并不是很了解，所以我希望在这里得到一些帮助。我的文件如下所示：tegra210-p3448-0002-p3449-0000-b00.dts

/dts-v1/;
#include "tegra210-porg-p3448-common.dtsi"
#include "porg-platforms/tegra210-porg-camera-rbpcv3-dual-imx477.dtsi"
#include "porg-platforms/tegra210-porg-camera-rbpcv2-dual-imx219.dtsi"
#include "porg-platforms/tegra210-porg-pinmux-p3448-0002-b00.dtsi"
#include "porg-platforms/tegra210-porg-gpio-p3448-0002-b00.dtsi"
#include "porg-platforms/tegra210-porg-p3448-emc-a00.dtsi"
/ {
model = "NVIDIA Jetson Nano Developer Kit";
compatible = "nvidia,p339-0000-b00+p3448-0002-b00", "nvidia,jetson-nano", "nvidia,tegra210";
nvidia,dtsfilename = __FILE__;
sdhci@700b0600 { /* SDMMC4 for EMMC */
status = "okay";
};
sdhci@700b0000 { /* SDMMC1 for SD card */
status = "okay";
};
spi@70410000 { /* QSPI */
status = "disabled";
};
gpio@6000d000 {
/* gpio-name for 40-pin header, gpio-name given as COL(10) x ROW(20) */
gpio-line-names = "", "", "", "", "", "", "", "", "", "",
"", "", "SPI1_MOSI", "SPI1_MISO", "SPI1_SCK", "SPI1_CS0", "SPI0_MOSI", "SPI0_MISO", "SPI0_SCK", "SPI0_CS0",
"SPI0_CS1", "", "", "", "", "", "", "", "", "",
"", "", "", "", "", "", "", "", "GPIO13", "",
"", "", "", "", "", "", "", "", "", "",
"UART1_RTS", "UART1_CTS", "", "", "", "", "", "", "", "",
"", "", "", "", "", "", "", "", "", "",
"", "", "", "", "", "", "I2S0_FS", "I2S0_DIN", "I2S0_DOUT", "I2S0_SCLK",
"", "", "", "", "", "", "", "", "", "",
"", "", "", "", "", "", "", "", "", "",
"", "", "", "", "", "", "", "", "", "",
"", "", "", "", "", "", "", "", "", "",
"", "", "", "", "", "", "", "", "", "",
"", "", "", "", "", "", "", "", "", "",
"", "", "", "", "", "", "", "", "", "",
"", "", "", "", "", "", "", "", "", "",
"", "", "", "", "", "", "", "", "GPIO07", "",
"", "", "", "", "", "", "", "", "", "",
"", "", "", "", "", "", "", "", "", "",
"", "", "", "", "GPIO12", "", "", "", "", "",
"GPIO11", "", "", "", "", "", "", "", "", "",
"", "", "", "", "", "", "GPIO09", "", "", "",
"", "", "", "", "", "", "", "", "", "",
"", "", "SPI1_CS1", "", "", "", "", "", "", "";
};
};

我尝试使用 dtc 进行编译的命令是这样的：

dtc -I dts -O dtb -o hardware/nvidia/platform/t210/porg/kernel-dts/tegra210-p3448-0002-p3449-0000-b00.dtb hardware/nvidia/platform/t210/porg/kernel-dts/tegra210-p3448-0002-p3449-0000-b00.dts -i hardware/nvidia/platform/t210/porg/kernel-dts/

我收到此错误：

Error: hardware/nvidia/platform/t210/porg/kernel-dts/tegra210-p3448-0002-p3449-0000-b00.dts:2.1-9 syntax error
FATAL ERROR: Unable to parse input tree

我正在研究包含的文件，但它们看起来并不糟糕（好吧，我很愚蠢，但无论如何）并且 dtc 可以与 echo 一起使用'/ { compatible = "test"; };' | dtc -I dts -O dtb -o test.dtb

我的操作系统是

Ubuntu 18.04 (I need that for installing the drivers / Software to the nvidia nano)
I am Using an AMD Ryzen 7 5800x
Version: DTC 1.6.1-g9bb73dd8

我请求帮助，因为这是我的科学项目：X

linux

1 个回答

  1. Best Answer

    希望这能有所帮助，基于@sawdust的评论和设备树参考中的预处理器专用命令

    这些命令似乎产生了良好的结果：

    # CLONE REPO THAT CONTAINS REFERENCED INCLUDE DTSI FILES
git clone https://github.com/OE4T/linux-tegra-4.9.git

# USE CPP TO COMBINE DTS AND DTSI FILES INTO DTS SUITABLE FOR DTC COMMAND
cpp -DLINUX_VERSION -nostdinc -I linux-tegra-4.9/nvidia/platform/t210/porg/kernel-dts -I linux-tegra-4.9/nvidia/platform/t210/common/kernel-dts -I linux-tegra-4.9/nvidia/soc/t210/kernel-dts -I linux-tegra-4.9/nvidia/soc/tegra/kernel-include -undef -x assembler-with-cpp tegra210-p3448-0002-p3449-0000-b00.dts post-cpp.dts

# DTC COMMAND TO PRODUCE DTB FROM DTS
dtc -I dts -O dtb -o tegra210-p3448-0002-p3449-0000-b00.dtb -i linux-tegra-4.9/nvidia/platform/t210/porg/kernel-dts post-cpp.dts

# DTC COMMAND TO PRODUCE DTS FROM DTB (FOR VERIFYING THE DESIRED RESULTS)
dtc -I dtb -O dts -o back-again.dts tegra210-p3448-0002-p3449-0000-b00.dtb

    输出

    cpp命令生成一个文件，用作命令post-cpp.dts的输入，最终命令将该文件转换回用于验证的文件。以下是从我认为原始文件试图修改的文件中得出的值：dtctegra210-p3448-0002-p3449-0000-b00.dtbdtcdtbdtsdtbdts

    /dts-v1/;

/memreserve/    0x0000000080000000 0x0000000000020000;
/ {
    compatible = "nvidia,p339-0000-b00+p3448-0002-b00\0nvidia,jetson-nano\0nvidia,tegra210";

    sdhci@700b0600 {
        status = "okay";

    sdhci@700b0000 {
        status = "okay";

    spi@70410000 {
        status = "disabled";
    • 0

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